2. The TSA looks for specific behaviors to find terrorists
Despite doubts that the TSA can effectively find dangerous people — and not dangerous items in travelers’ bags — the agency is always on the lookout for terrorists and criminals at the airport. The TSA even compiled a list of behaviors that might signify that somebody is a terrorist. And when that confidential document was published, it made quite a splash. As The Intercept reported, the underlying program has attracted controversy due to the lack of science supporting it — but TSA agents have to comply with instructions regardless of whether there’s science backing up the rules or not.